Is there a simple reason why the articulations, i.e. Sustain, Palm Mute, Harmonics, etc. don't work when I enable velocity control with most of the presets? Or is there something that needs to be fixed? They work fine with my Evolution Stratosphere and Infinity.

For example, if I use the "Big Sky" preset then map the Mute articulation to the full range of velocity (0 - 127), it sounds no different. It's the same for any of the other articulations and many of the other presets that have no mappings.